Precession
n. 先行, 优先\\n[化] 进动; 旋进
📖 牛津释义
precession
n[U]
(also pre,cessionof the `equinoxes) gradual change in the angle at which the earth revolves daily, causing the equinoxes to occur slightly earlier in each successive year 岁差（地球自转角度的渐次变化, 使每年的春分点及秋分点比上年略为提前）.
🗣️ 情景例句
I don't know.
我不知道。
If at first you don't succeed, try, try again.
初试不成功，努力勿懈怠。
Most of our fears are unreasonable, but they are impossible to erase.
我们的恐惧大部分是没有道理的，但去无法消除。